Box lining forming and inserting machine



Oct. 7, 1941. E. G. JURGENS ET AL 7 BOX LINING FORMING AND INSERTING MACHINE 6 Sheets-Sheet 1 Filed Sept. 14, 1940 Oct. 7, 1941. E. G. JURGENS ET AL BOX LINING FORMING AND INSERTI NG MACHINE Filed Sept. 14, 1940 6 Sheets-Sheet 2 Oct. 7, 1941. E. a. JURGENS ET AL BOX LINING FORMING AND INSERTING MACHINE Filed Sept. 14, 1940 6 Sheets-Sheet 3 Oct. 7, 1941. E. G. JURGENS ET AL BOX LINING FORMING AND INSERTING MACHINE 6 Sheets-Sheet 4 Filed Sept. 14, 1940 m .Zvvez: 2221s- 5721/6. Jz'yezzs' .25272622 KEG-47A?! Oct 7, 1941. E. G. JURGENS ETAL BOX LINING FORMING AND INSERTING MACHINE 6 Sheets-Sheet 5 Eva l ll

TJ II I.

Oct. 7, 1941. E. G. JURGENS ET AL 2,258,013

' BOX LINING FORMING AND INSERTING MACHINE Filed Sept. 14, 1940 6 Sheets-Sheet 6 Patented Oct. 7, 1941 2.25am Box nmmd some in msnn'rma monnm Emil G. Jurgens, Chicago.

and llalen K. Becker,

Winnetkn,' 111., assignors to Peters 00., Chicago, 111., a corporation Illinob Application September 14, 1940, Serial No. 358,774 3 Claim!- (Cl- 93-38.!)1)

The improvements herein specified relate to machines for forming box linings. placing the linings in boxes and removing the lined boxes from the machine. Such machines generally include a continuous conveyor carryin a series of forms which engage lining sheets and carry the sheets while the latter are being mechanically folded around the forms to bag shape. The linings may be fitted in boxes during the folding operation, after which operation the lined boxes are ejected from the machine.

The improvements are. directed to the particular mechanism employed for folding the lining sheets around the forms; to an arrangement for inserting the linings into boxes; and to a specific ejecting mechanism for the lined boxes.

' A specific construction embodying the improvement is illustrated by the accompanying drawings, wherein:

Figure l is a longitudinal sectional view of a box lining machine employing the improvements.

Figs. 2 through 7 are fragmentary enlarged details in side elevation and partly in section, illustrating successive operations on the lining material.

Figs. 8 through 11 are fragmentary details in side elevation partly in section, and on a larger scale than Figs. 2 to '1, inclusive, illustrating continued folding operations.

Fig. 12 is an enlarged detail partly in section,v

showing in side elevation the construction of a fiap folding device.

beyond the elevator and the runway is located at it for sliding ejected lined boxes to a delivery belt II.

A commonly used feed mechanism M for the I lining material is located at the top of the machine. The lining material isfed from the roll ii and is cut to suitable lengths before entering the machine by a shearing knife it cooperating with the feed mechanism. The drive for the feed mechanism is intermittent in order that the lining material will not be in motion during the Fig. 13 is a front view of the mechanism shown 7 in Fig. 12. n

Fig. 14 is an enlarged end view of a lining form.

Fig. 15 is a top view of the form.

Fig. 16 is a diagram of the main drive mechanism of the machine.

Referring to Fig. 1 of the drawings, the machinery includes a series of hollow blocks I fixed between a pair of parallel conveyor chains 2 travelling around sprockets 3. Travel of the conveyor is in the direction indicated by the arrow. A drive shaft 4 rotates continuously but intermittently drives the conveyor through a pitman i, anotched disc and a pawl I, Fig. l6.

Lining folding elements arranged to cooperate with the blocks are located along the upper path of the chains. An elevator l which raises empty boxes 9 to the path of the blocks for receiving linings is slidably supported at the lower path of the conveyor. A conveyor belt for depositing boxes on the elevator is indicated at it. Sickleshaped ejector arms II for actuating electing mechanism carried within the blocks are located shearing process. Feed rollers ll, II' and II guidethe lining material to shearing position, from which position the lining is momentarily suspended in the path of the blocks. At the time of the shearing operation one of the moving blocks pushes the severed portion 2. of the lining material between plates 2| located above and below the path of the-block, Figs. 2 and 3. The plates force the lining sheet Ill back against the top and bottom of the block, Fig. 4, leaving portions of the lining sheet extending outwardly from each side of the block.

A pair of rotating flap creasing arms 22 at the same moment pass along the sides of the block before arriving in position for the fiap creasing operation. During this movement a pair of lining folding arms 23 embrace the sides of the block with an upward movement, Figs. 6, 7 and 8, thereby folding the lower portions oi the lining sheet fiat against the sides of the block. These actions are so timed that when the arms 23 have completed the upward stroke the fiap creasing arms 22 have moved to the position of Fig. 9, thereby producing forwardly disposed fiaps 24. Flap bracing extensions 25 of the folding arms 28 are inwardly oifset to lie along theinner sides of the fiaps, the arms being slotted at 26 to allow this, as shown in Fig. 9.

The foldingv operation is continued by an upper pair of lining folding arms 21 which descend ad- 'lacent the sides of the block, folding the top lining fingers 29 (Figs. 12 and 13) cooperate with the movement of the block to fold the forwardly extending lining flaps back against the sides of the lining. These fingers momentarily move inwardly in front of an approaching block,'so that -the flaps pass on the outside of the fingers. The fingers immediately move outwardly, thereby bending the flaps, which are folded flat against the box sides by the passage of the block between the fingers.

Insertion of the linings into boxes 9 is accomplished by placing a box on the elevator 8 with the open end of the box toward the approaching block. The hollow block and lining travel into the box, carrying the box from the elevator. After leaving the elevator the lined box is pushed from the block by an ejector mechanism carried within the blockand actuated by the ejector arms ll, Fig. 1.

The ejector mechanism, Figs. 14 and 15 comprises a pair of sliding runners '30 held within the block by springs 3|. The front ends of the runners are provided with flat heads H, which abut the inner surface of the lining bottom. Each runner is provided with an inwardly extending lateral projection 33 positioned in the path of the ejector arms. By this arrangement pushing motion of the arms is transferred to the runners which are moved forwardly as indicated by dotted lines in Fig. 15. The lined box is carried from the block by this movement and falls to runway l2 fmm which the box slides to delivery conveyor 13.

All the elements of the machine are dependent for operation on a connected arrangement of cams and gearing receiving motion from drive shaft 4. This arrangement more or less resembles those commonly used in machines of this general character and is not essential to the improvement; hence, it is not fully illustrated.

Part of the drive arrangement is indicated in Fig. 1 which shows actuating means for the ejector arms and the elevator comprising a pair of cams u and "fast on-the shaft 38 and a pair of springs 31 and 38. The springs pull the ejector arms and the elevator to block engaging position and the cams cause the return strokes. Motion is transmitted from cam 34 to the ejecting arms through a toothed segment a pivoted to a shaft ll, the arm ll of the segment having a roller 42 which bears against the ,cam 34. In mesh with toothed segment 39 is a similar gear 43 fast to a shaft 44 on which the ejector arms H are fixed. An arm I! for imparting movement from cam 35 to the elevator is pivoted to shaft 4| and linked by a slot and pin connection 4 to the elevator. A

roller 41 carried by arm 45 bears against the cam.

The cam shaft 36 carries a gear 48 meshing with a gear I! on the drive shaft 4.

Flap folding fingers 29 are pivoted at (Figs. 12 and 13) to the machine frame and carry rollers II. Cams 52 and 83 fast to a shaft 54 bear against the rollers and are so shaped that rotation of the shaft causes oscillation of the fingers, as previously described. Shaft 54 is operatively connected to the drive by a sprocket 55 and chain '8 (Fig. 16).

Actuation of theiining folding arms 21 and 23 is accomplished by a cam N, Fig. 16. The cam bears against a pair of .arms 88 and 5! respectively fixed on a pair of shafts I and II to which are attached the lining folding arms. Connecting means, in this case a gear train .2, lead to the main drive shaft I from the cam shaft G3.

Each of the flap creasing arms 22 has a shaft l4 operated by the gear train '2.

The operation of the machine simply involves initially adjusting the lining material in correct shearing positiomafter which the procedure described above takes place automatically.

the form, the lower pair of folding arms having inwardly offset forward extensions and slots between the extensions and the folding arms, a pair of flap creasing arms located one adjacent each of the extensions and means for rotating the greasing arms in the direction of travel of the orm.

2. A machine for forming bag-shaped linings including a form carried by a conveyor, a feed mechanism arranged to deposit a lining sheet in front of the form, lining folding members positioned above and below the path of the form, two pairs of movable lining folding arms located above and below the path ofthe form and means for oscillating the arms vertically adjacent the sidei: of the form, the lower pair of folding arms having inwardly oifset forward extensions and slots between the extensions and the folding arms, a pair of flap creasing arms located one adjacent each of the extensions and means for rotating the creasing arms in the direction of travel of the form, a pair of fingers located one at each side of the path of the form and means for oscillating the fingers from the sides to the front of 3. A machine for forming bag-shaped box linings and inserting the linings into boxes including a hollow carried by a the path of the form.

horizontal conveyor, lining folding elements arranged to form bag-shaped linings the form with the open end of the box around the form with the bottom of the bags across the front of the form, a box supporting elevator arranged to place a box in the path of facing the form andin a position to be entered by the form, and a synchronized drive for the conveyor, lining folding elements and box supporting elevator.

lining form open at each end and- 

